package thinkingInJava.enumerated;
// page 599 另外一种枚举的枚举
//: enumerated/SecurityCategory.java
//More succinct subcategorization of enums.

enum SecurityCategory {
	STOCK(Security.Stock.class), BOND(Security.Bond.class);
	Security[] values;
	SecurityCategory(Class<? extends Security> kind) {
		values = kind.getEnumConstants();
	}
	interface Security {
		enum Stock implements Security { SHORT, LONG, MARGIN }
		enum Bond implements Security { MUNICIPAL, JUNK }
	}
	public Security randomSelection() {
		return Enums.random(values);
	}
	public static void main(String[] args) {
		for(int i = 0; i < 10; i++) {
			SecurityCategory category =
					Enums.random(SecurityCategory.class);
			System.out.println(category + ": " +
					category.randomSelection());
		}
	}
} /* Output:
BOND: MUNICIPAL
BOND: MUNICIPAL
STOCK: MARGIN
STOCK: MARGIN
BOND: JUNK
STOCK: SHORT
STOCK: LONG
STOCK: LONG
BOND: MUNICIPAL
BOND: JUNK
 *///:~
